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WunderlichA-Auto

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ID = 21407
       
Country:
United States of America (USA)
Brand: Arcturus Radio Tube Co.; Newark, NJ
Tube type:  Wunderlich Tube   Detector 
Identical to WunderlichA-Auto = WA-Auto = A-Auto
Similar Tubes
Other characteristic (electr. data):
  69_Wunderlich ; 70_Wunderlich ; 92_Wunderlich ; KR22
First year 1932 - - Data from my own collection

Base 6-Pin-Base U6A, old, USA
Filament Vf 6.3 Volts / If 0.4 Ampere / Indirect / Parallel, (AC/DC)
Description A triode had two intermeshed grids equally spaced from the single cathode and the plate. Used as a full wave detector (am) with additional LF-amplification.
It was made only with a 6 pin base with no cap. The original announcement in the press (July 1932) made at the same time as the 2.5 volt version, mentioned both 5 and 6-pin types. 
Text in other languages (may differ)
 
arcturus_wunderlich_automotive_bm.jpg
WunderlichA-Auto: Bob Millard collection
Fin Stewart

 
tubesockel_klein_wa6p_9.png
WunderlichA-Auto: W.H.
Wolfgang Holtmann

 

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